The advertising deluge for Michael Bay's fifth, and reportedly final, Transformers film is as relentless as the Autobots themselves. After five previous trailers and new posters leading up to this month's premiere, a newly released international trailer provides small but interesting revelations about what we can expect from the plot of The Last Knight.

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Dragonstorm opens the trailer once again, a fitting character to feature considering we know Transformers: The Last Knight focuses on the previously hidden history of the Autobots on Earth, with ties back to King Arthur. Bumblebee is seen sporting a vintage look while fighting Nazis during World War II, and further establishing him as this film's primary defender. We see more of Optimus and Bumblebee's battle, and get a line from Mark Wahlberg's Cade saying, "This isn't you, Prime."

That would seem to solidify that Optimus Prime -- for whatever reason -- has gone bad and serves as the primary opposing force of the film. There's also a look at Megatron transforming from his jet form, confirming he'll play some small part in the film.

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With plans calling for The Last Knight to be followed by a Bumblebee spinoff, Paramount Pictures clearly hopes to keep up the franchise's momentum.

Arriving June 21, Transformers: The Last Knight stars franchise veterans Mark Wahlberg, Stanley Tucci, Josh Duhamel, Tyrese Gibson and John Turturro, joined by newcomers Isabela Moner, Liam Garrigan, Jerrod Carmichael, Mitch Pileggi, Laura Haddock, Santago Cabrera and Anthony Hopkins.